JP2007203683A - Inkjet recording apparatus control program and inkjet recording apparatus - Google Patents

Abstract

An ink jet recording apparatus control program and an ink jet recording apparatus capable of controlling ink droplets ejected according to the type of recording medium to an appropriate size are provided.
When printing paper is plain paper, small dots are 3 pl, medium dots are 5 pl, large dots are 10 pl, and when printing paper is glossy paper, small dots are 1.5 pl and medium dots. Are stored so that 3 pl and large dots are 10 pl. As shown in this table, for large dots, the same 10 pl is used regardless of whether the printing paper is plain paper or glossy paper. For medium dots and small dots, when using plain paper, the droplet size is set to 10 pl. The size is set larger than when glossy paper is used.
[Selection] Figure 6

Description

  The present invention relates to an ink jet recording apparatus control program and an ink jet recording apparatus, and more particularly to an ink jet recording apparatus control program and an ink jet recording apparatus that can control ejected ink droplets to an appropriate size.

  Conventionally, an image is printed on a recording medium by repeating a recording operation for ejecting ink toward the recording medium while reciprocating a head for ejecting ink in the main scanning direction and a conveying operation for conveying the recording medium in the sub-scanning direction. Inkjet printers are known that form

  The head includes ejection openings that eject a plurality of inks in the direction in which the recording medium is conveyed, and is formed so that ink is ejected from these ejection openings toward the recording medium.

  An injet that prevents the ink droplets from landing at different points when the recording medium moves at a predetermined speed by keeping the distance between the head and the surface of the recording medium facing the head constant. A recording apparatus is disclosed in Japanese Patent Laid-Open No. 2003-72055 (Patent Document 1).

In addition, when the interval between the head and the platen can be changed, an inkjet recording apparatus capable of obtaining a good image by performing processing such as recognizing the interval and changing the timing of ejecting ink droplets. Is disclosed in Japanese Patent Laid-Open No. 2002-96528 (Patent Document 2).
JP 2003-72055 A JP 2002-96528 A

  However, the invention disclosed in Patent Document 1 has a problem that the mechanism for maintaining a constant distance between the head and the surface of the recording medium facing the head becomes complicated, and the apparatus becomes expensive. Also, when the recording medium is plain paper, if the ink adheres to the head, the paper will swell and the cockling will become uneven, and the plain paper will come into contact with the head. There was a drawback of causing.

  In the invention disclosed in Patent Document 2, the user can freely adjust the head gap. However, when the head gap is large, if the ink ejected from the ink ejection port is small, the ink becomes mist. In addition, there is a problem that the ink landing point does not allow the landing point to be determined. The ink head reciprocates in the main scanning direction, and the recording medium is moved in the sub-scanning direction. Therefore, the air existing between the head and the recording medium moves in a complicated manner. In recent years, in order to improve the image, a small droplet of about 1 pl (picoliter) has been ejected and sometimes floated by the flow of air.

  FIG. 8 is a schematic diagram showing the positional relationship between the head and the plain paper placed on the platen. Here, the case where the head ejects ink while moving from the left side to the right side of the paper surface is shown. . When the amount of ejected ink droplets is large, the droplets land on the print surface along the trajectory shown by b, but when the amount of droplets is small, the head reciprocates or the printing paper moves. Due to the complicated air movement around the head, the ejected ink is deposited in a locus as indicated by a or c, and the landing point may not be constant.

  The present invention has been made to solve the above problems, and an ink jet recording apparatus control program and an ink jet recording apparatus capable of controlling ink droplets ejected according to the type of recording medium to an appropriate size The purpose is to provide.

  In order to achieve this object, an ink jet recording apparatus control program according to claim 1 of the present invention provides an ink discharge port for discharging ink, and a droplet size for controlling the droplet size of ink discharged from the ink discharge port. A recording medium type setting step for setting a type of the recording medium; and a recording medium type setting step for controlling an ink jet recording apparatus that performs printing by discharging ink from the ink discharge port to the recording medium. A droplet size setting step for setting the droplet size of the ink controlled by the droplet size control means in accordance with the type of the recording medium set by the type setting step.

  The ink jet recording apparatus control program according to claim 2 is the ink jet recording apparatus control program according to claim 1, wherein the droplet size setting step corresponds to a thickness of the recording medium set by the recording medium type setting step. The droplet size of the ink to be ejected is controlled.

  The ink jet recording apparatus control program according to claim 3 is the ink jet recording apparatus control program according to claim 1 or 2, wherein the droplet size setting step corresponds to a type of the recording medium set by the recording medium type setting step. Thus, a setting is made so that a small droplet size is not selected from a plurality of selectable droplet sizes.

  The ink jet recording apparatus control program according to claim 4 is the ink jet recording apparatus control program according to claim 1 or 2, wherein the droplet size setting step corresponds to a type of the recording medium set by the recording medium type setting step. Thus, the droplet size is set by reading the droplet size from the droplet size storage means in which the droplet size is stored corresponding to the type of the recording medium.

  The ink jet recording apparatus control program according to claim 5 is the ink jet recording apparatus control program according to any one of claims 1 to 4, wherein the ink jet recording apparatus is arranged to face the ink discharge port and the ink discharge port. A gap setting means for setting an interval between the ink discharge port and the platen disposed opposite to the ink discharge port. The droplet size is set according to the recording medium type set in the recording medium type setting step.

  The ink jet recording apparatus according to claim 6, further comprising: an ink ejection port that ejects ink; and a droplet size control unit that controls a droplet size of the ink ejected from the ink ejection port, and the ink is ejected from the ink ejection port. Printing is performed by discharging onto a recording medium, and a recording medium type setting unit for setting the type of the recording medium, and the droplet size control according to the type of the recording medium set by the recording medium type setting unit Droplet size setting means for setting the ink droplet size controlled by the means.

  The ink jet recording apparatus according to claim 7 is the ink jet recording apparatus according to claim 6, wherein the droplet size setting means is configured to eject ink according to the thickness of the recording medium set by the recording medium type setting means. Control droplet size.

  An ink jet recording apparatus according to claim 8 is the ink jet recording apparatus according to claim 6 or 7, wherein the droplet size setting means can be selected according to the type of the recording medium set by the recording medium type setting means. Among the plurality of droplet sizes, a setting is made so as not to select a small droplet size.

  An ink jet recording apparatus according to claim 9 is the ink jet recording apparatus according to claim 6 or 7, further comprising droplet size storage means for storing a droplet size corresponding to a type of the recording medium, wherein the droplet size setting is performed. The means sets the droplet size by reading the droplet size from the droplet size storage unit according to the type of the recording medium set by the recording medium type setting unit.

  The ink jet recording apparatus according to claim 10 is the ink jet recording apparatus according to any one of claims 6 to 9, wherein a gap for setting an interval between the ink discharge port and a platen disposed to face the ink discharge port. The droplet size setting means includes a gap between the ink discharge port set by the gap setting unit and a platen disposed opposite to the ink discharge port, and the recording medium type setting step. The droplet size is set according to the set type of the recording medium.

  According to the ink jet recording apparatus control program of claim 1, the recording medium type setting step for setting the type of the recording medium, and the droplet size control means according to the type of the recording medium set by the recording medium type setting step A droplet size setting step for setting the droplet size of the ink controlled by the control unit, so that the droplet size of the ink ejected from the ejection port is set to an appropriate droplet size according to the type of the recording medium can do. Therefore, when the distance between the ink ejection port and the surface of the recording medium is large depending on the type of the recording medium, or when cockling occurs on the recording medium, the ink droplets are increased by increasing the ink droplets. It is possible to keep the droplet landing point constant, to prevent the distortion of the image that occurs due to the shift of the droplet landing point, and to perform clear and high-quality printing.

  According to the ink jet recording apparatus control program of the second aspect, in addition to the effect produced by the ink jet recording apparatus control program according to the first aspect, the droplet size setting step includes the thickness of the recording medium set by the recording medium type setting step. Since the droplet size of the ink to be ejected is controlled according to the thickness, even if the interval between the ink ejection port and the surface of the recording medium changes according to the thickness of the recording medium, the droplet size is adjusted according to the interval. Can be set. Therefore, there is an effect that it is possible to prevent the occurrence of image distortion caused by the deviation of the landing point and to perform clear and high-quality printing.

  According to the ink jet recording apparatus control program according to claim 3, in addition to the effect of the ink jet recording apparatus control program according to claim 1 or 2, the droplet size setting step is a recording medium set by the recording medium type setting step. Depending on the type of ink droplets, it is set not to select a small droplet size among a plurality of selectable droplet sizes, so that the droplet size of the ink ejected from the ejection port depends on the type of the recording medium. A small droplet size can be prevented from being set. Therefore, when the distance between the ink discharge port and the surface of the recording medium is large depending on the type of the recording medium, or when cockling occurs in the recording medium, the ink droplet is prevented from being reduced. Therefore, it is possible to keep the droplet landing point constant and to prevent the occurrence of image distortion caused by the shift of the droplet landing point. Therefore, there is an effect that clear high-quality printing can be performed.

  According to the ink jet recording apparatus control program according to claim 4, in addition to the effect produced by the ink jet recording apparatus control program according to claim 1 or 2, the droplet size setting step is a recording medium set by the recording medium type setting step. According to the type of the recording medium, the droplet size is set by reading the droplet size from the droplet size storage means storing the droplet size corresponding to the type of the recording medium. There is an effect that the droplet to be ejected can be set to a droplet size corresponding to the type of the recording medium.

  According to the ink jet recording apparatus control program of the fifth aspect, in addition to the effect exerted by the ink jet recording apparatus control program according to any one of the first to fourth aspects, the ink jet recording apparatus has an ink ejection port and an ink ejection port thereof. Gap setting means for setting an interval with a platen arranged opposite to each other, and the droplet size setting step includes: an ink discharge port set by the gap setting means; a platen arranged opposite to the ink discharge port; In the apparatus capable of adjusting the interval between the ejection port and the surface on which the recording medium is installed, since the droplet size is set according to the interval of the recording medium and the type of the recording medium set by the recording medium type setting step. The droplet size of the ink discharged from the discharge port is determined by the distance between the discharge port and the surface on which the recording medium is installed, and the type of the recording medium Can be set to an appropriate droplet size was Flip. Therefore, by increasing the ink droplet size when the distance between the ink discharge port and the surface of the recording medium is large depending on the type of the recording medium or when cockling occurs on the recording medium, There is an effect that the landing point for landing can be kept constant, the occurrence of image distortion caused by the deviation of the landing point can be prevented, and clear and high-quality printing can be performed.

  According to the ink jet recording apparatus of the sixth aspect, the recording medium type setting means for setting the type of the recording medium and the droplet size control means are controlled according to the type of the recording medium set by the recording medium type setting means. A droplet size setting means for setting the droplet size of the ink to be discharged, so that the droplet size of the ink discharged from the discharge port can be set to an appropriate droplet size according to the type of the recording medium. it can. Therefore, when the distance between the ink ejection port and the surface of the recording medium is large depending on the type of the recording medium, or when cockling occurs on the recording medium, the ink droplets are increased by increasing the ink droplets. The drop landing point can be kept constant, the image distortion caused by the shift of the drop landing point can be prevented, and clear high-quality printing can be performed.

  According to the ink jet recording apparatus of the seventh aspect, in addition to the effect produced by the ink jet recording apparatus of the sixth aspect, the droplet size setting means is in accordance with the thickness of the recording medium set by the recording medium type setting means. Since the droplet size of the ejected ink is controlled, even if the interval between the ink ejection port and the surface of the recording medium changes according to the thickness of the recording medium, the droplet size can be set according to the interval. it can. Therefore, there is an effect that it is possible to prevent the occurrence of image distortion caused by the deviation of the landing point and to perform clear and high-quality printing.

  According to the ink jet recording apparatus of the eighth aspect, in addition to the effect exhibited by the ink jet recording apparatus according to the sixth or seventh aspect, the droplet size setting means corresponds to the type of the recording medium set by the recording medium type setting means. Therefore, it is set not to select a small droplet size from among a plurality of selectable droplet sizes, so the droplet size of the ink discharged from the discharge port is small depending on the type of recording medium. It can be set not to. Therefore, when the distance between the ink discharge port and the surface of the recording medium is large depending on the type of the recording medium, or when cockling occurs in the recording medium, the ink droplet is prevented from being reduced. Therefore, it is possible to keep the droplet landing point constant and to prevent the occurrence of image distortion caused by the shift of the droplet landing point. Therefore, there is an effect that clear high-quality printing can be performed.

  According to the ink jet recording apparatus of the ninth aspect, in addition to the effect produced by the ink jet recording apparatus of the sixth aspect or the seventh aspect, the liquid droplet size storing means for storing the liquid droplet size corresponding to the type of the recording medium is provided. The droplet size setting means sets the droplet size by reading the droplet size from the droplet size storage means according to the type of the recording medium set by the recording medium type setting means. There is an effect that the droplet discharged from the discharge port can be set to a droplet size corresponding to the type of the recording medium.

  According to the ink jet recording apparatus of the tenth aspect, in addition to the effect exhibited by the ink jet recording apparatus according to any one of the sixth to ninth aspects, the ink discharge port and the platen disposed to face the ink discharge port A gap setting means for setting an interval, and the droplet size setting means includes an interval between the ink discharge port set by the gap setting device and a platen disposed opposite to the ink discharge port, and a recording medium type setting step. Since the droplet size is set according to the type of the recording medium set by the method, the apparatus can adjust the distance between the ejection port and the surface on which the recording medium is installed. The droplet size can be set to an appropriate droplet size according to the interval between the ejection port and the surface on which the recording medium is installed and the type of the recording medium. Therefore, by increasing the ink droplet size when the distance between the ink discharge port and the surface of the recording medium is large depending on the type of the recording medium or when cockling occurs on the recording medium, There is an effect that the landing point for landing can be kept constant, the occurrence of image distortion caused by the deviation of the landing point can be prevented, and clear and high-quality printing can be performed.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an electrical configuration of a personal computer (hereinafter simply referred to as “PC”) 10 functioning as an image processing apparatus in which an ink jet recording apparatus control program of the present invention is executed, and a printer 20 connected to the PC 10. FIG.

  The PC 10 includes a CPU 11, a ROM 12, a RAM 13, a hard disk drive (hereinafter referred to as “HDD”) 14, an operation unit 15, an LCD (liquid crystal display) 16 as a display device, and a printer interface (hereinafter referred to as “I / I”). F) 17, which are connected to each other by a bus 18.

  The CPU 11 is an arithmetic unit and executes a program stored in the ROM 12, RAM 13, or HDD 14. The ROM 12 is a read-only memory that stores a basic program such as a boot program.

  The RAM 13 is a rewritable memory that stores data that needs to be temporarily stored in the processing executed by the CPU 11, and executes various application programs and printer drivers stored in the HDD 14. These programs are transferred to the RAM 13 and executed.

  The HDD 14 stores an OS memory 14a that stores an operating system executed by the PC 10, a droplet amount table memory 14b that stores a droplet amount table that is referred to when the printer driver executes halftone processing, and a printer driver. The rewritable memory includes a printer driver memory 14c and an image data memory 14d for storing image data.

  Next, various items set in the processing by the printer driver will be described with reference to FIG. FIG. 2 shows a property setting screen 28 displayed on the LCD 16 when print property setting is selected when executing the printer driver.

  In the property setting screen 28, a paper type selection box 28a for selecting and setting a printing paper as a recording medium to be printed, a paper size setting box 28b for selecting and setting the size of the printing paper, and a layout for setting the layout of the printing surface A setting box 28c and a number setting box 28d for setting the number of copies to be printed are displayed.

  The paper type selection box 28a has a display area for displaying the selected paper type, and an icon in which a triangle pointing downward is drawn on the right end of the area. When clicked, a pull-down menu is displayed as shown in FIG. When the cursor is moved to any item in the next displayed pull-down menu, the item indicated by the cursor is selected.

  In this embodiment, either plain paper or glossy paper can be selected as the type of printing paper. One of these paper types is selected. Similarly, the paper size setting box 28b has an area for displaying the size of the selected paper, and an icon for instructing display of a pull-down menu for selection. You can choose from postcards, envelopes, and more.

  Similarly, the resolution setting box 28c has an area for displaying the selected resolution and an icon for instructing display of a pull-down menu for selection, and the resolution is selected from high resolution and low resolution. can do. The high resolution is, for example, 1200 × 1200 dpi, and the low resolution is 600 × 600 dpi, and the size of the droplet set in accordance with the resolution is different.

  The number of copies setting box consists of an area that displays the set number of copies as a numerical value. On the right side of the area, an increment icon that displays an upward triangle to increase the numerical value and a downward triangle that decreases the numerical value The decrement icon displaying “” is provided, and the number of copies can be set by moving the cursor to these icons and operating the mouse. It is also possible to input the number of copies directly using a numeric keypad.

  Next, the distance between the head and the surface of the recording paper will be described with reference to FIG. FIG. 3 shows a case of a recording apparatus in which the distance between the head position and the platen on which the recording paper is placed is constant. As shown in FIG. 3A, when plain paper is selected as the printing paper, the distance between the upper surface of the platen and the lower surface of the head is G, and when the plain paper is installed on the upper surface of the platen, The distance between the upper surface (printing surface) and the head is a value A obtained by subtracting the thickness of the plain paper from the distance G.

  As shown in FIG. 3B, when glossy paper is selected as the printing paper, when the glossy paper is installed on the upper surface of the platen, the gap between the upper surface (printing surface) of the glossy paper and the head is A value B obtained by subtracting the thickness of the glossy paper from the distance G.

  Usually, the thickness of plain paper is about 90 μm, and the thickness of glossy paper is 225 μm, so the interval A is larger than the interval B. Therefore, when printing on plain paper, the gap between the lower surface of the head and the printing surface increases, and if the air floats and the ink droplets are small in the printer where the head or printing paper moves, the landing point Is no longer constant. When the printing paper is an envelope, the thickness is 210 to 260 μm, and the distance between the head and the printing surface is shortened.

  FIG. 4 is a diagram illustrating the case of a recording apparatus in which the vertical position of the head is adjusted. The vertical position of the head may be adjusted depending on the type of recording paper depending on the recording apparatus. In addition, there is a user who can set the vertical position of the head to an arbitrary position.

  FIG. 4A shows a case where the head is set at a low position (gap position 1). In this case, when plain paper is installed, the distance between the lower surface of the head and the printing surface of the plain paper is C. FIG. 4B shows a case where the head is set at a high position (gap position 2). In this case, when the same plain paper is selected, the bottom surface of the head, the printing surface of the plain paper, The interval D is D, and the interval D is wider than the interval C.

  FIG. 5 shows plain paper and glossy paper in contrast to FIG. 3. Glossy paper does not generate much cockling, but plain paper tends to generate cockling. It is necessary to take a large. FIG. 5A shows a state in which glossy paper is placed on the platen, the distance between the lower surface of the head and the printing surface is E, and FIG. 5B shows a state in which plain paper is placed on the platen. In this case, the distance between the lower surface of the head and the printing surface when the cockling does not occur on plain paper is F. As shown by the broken line in FIG. 5B, plain paper is liable to cause cockling by absorbing ink, etc. Therefore, it is necessary to set the head position at a high position.

  As an example of the case where the vertical position of the head can be adjusted, the distance (head gap) between the lower surface of the head and the upper surface of the platen is 1.1 mm when the recording paper is glossy paper, and when the recording paper is plain paper , 1.3 mm, and 1.5 mm for envelopes.

  Next, a droplet amount table for setting the droplet size will be described with reference to FIG. This droplet amount table is stored in the droplet amount table memory 14b of the HDD. In this embodiment, in the so-called halftone process, printing is performed by using three types of liquid droplets of small dots, medium dots, and large dots. The size is stored. Further, this droplet amount table is stored for each resolution, and the example shown in FIG. 6 is a table when the resolution is 1200 × 1200 dpi.

  As shown in this table, when the printing paper is plain paper, the small dot is 3 pl, the medium dot is 5 pl, the large dot is 10 pl, and when the printing paper is glossy paper, the small dot is 1.5 pl. , Medium dots are stored as 3 pl, and large dots are stored as 10 pl. As shown in this table, for large dots, the same 10 pl is used regardless of whether the printing paper is plain paper or glossy paper. For medium dots and small dots, when using plain paper, the droplet size is set to 10 pl. The size is set larger than when glossy paper is used.

  Next, processing performed by the printer driver will be described with reference to FIG. FIG. 7 is a flowchart illustrating processing executed by the printer driver. In the process by the printer driver, first, the printer property screen shown in FIG. 2 is displayed, and the user inputs settings such as the paper type, paper size, and resolution on this screen (S1).

  Next, color conversion processing of an image to be printed is performed (S2). This color conversion process is a process for converting RGB (Red, Green, Blue) values constituting an input image into CMYK (Cyan, Magenta, Yellow, Black) values for printing. Before the color conversion process, an optimum profile for the selected paper type is selected, and profile conversion of image data is performed based on the profile. However, detailed description thereof is omitted here.

  Next, it is determined whether or not the paper type set in the setting input in S1 is plain paper (S3). If the paper type is set to plain paper (S3: Yes), halftone processing is performed using small, medium, and large droplet sizes corresponding to the plain paper shown in FIG. 6 (S4). As the halftone processing, methods such as a dither method and an error diffusion method are known. For each value of CMYK, the ink droplet size discharged from each pixel when printing is set to small, medium, or large. This is a process for setting whether to select none.

  On the other hand, when the paper type is set to glossy paper instead of plain paper in the determination process of S3 (S3: No), small, medium, and large droplet sizes corresponding to the glossy paper shown in FIG. 6 are used. Then halftone processing is performed (S5).

  When the droplet size is set in the halftone process of S4 or S5, the set data is output to the printer 20 (S6).

  As described above, as described based on the embodiment, in the printer driver, when the paper type is set, the droplet size is set according to the paper type. Therefore, when the paper is thin like plain paper and cockling is likely to occur, the distance between the head and the surface of the printing paper placed on the platen is large. It is possible to keep the landing point constant. In addition, when the paper size is glossy paper, the thickness of the paper is thick and cockling is difficult to occur, so the distance between the head and the surface of the printing paper placed on the platen is short, Even if the droplet size is set to be relatively small, the landing point can be made constant and high-quality printing can be performed.

  In the above embodiment, the setting in the printer driver has been described. However, the present invention may be applied to the printer 20 in which a recording medium is directly mounted and image data stored in the recording medium is printed. .

  In the case of the printer 20 capable of adjusting the distance between the head and the platen (head gap), the head gap is adjusted according to the setting of the paper type or the paper size, and the adjusted head gap and the paper are adjusted. The optimum droplet size can be set according to the type of the liquid crystal. In this case, the paper thickness is stored for each paper type, and the distance between the head and the surface of the paper is calculated by subtracting the paper thickness from the adjusted head gap value. The droplet size is set by referring to a table that stores the droplet size to be stored.

  The recording medium type setting step and the recording medium type setting means described in the claims correspond to the process of S1 in the flowchart shown in FIG. 7, and the droplet size setting step and the droplet size setting means are shown in FIG. This corresponds to the processes of S4 and S5 in the described flowchart.

  Although the present invention has been described based on the above embodiments, the present invention is not limited to the above embodiments, and various modifications can be easily made without departing from the spirit of the present invention. It can be done.

  For example, in the above embodiment, the paper size is set on the display screen. However, the printer 20 includes a paper supply device that supplies paper, and the paper supply device guides the paper according to the size of the paper to be stored. When adjusting a plate or the like, by detecting the adjustment position of the guide plate, the type of paper (for example, A4 size is plain paper or glossy paper, and envelope size is envelope) May be detected.

  In the above embodiment, the droplet amount table that sets the droplet size according to the paper type is stored. However, the first table that stores the thickness of the paper according to the paper type The second table for setting the droplet size according to the sheet thickness is stored, and when the sheet type is set, the sheet thickness is read from the first table, and the read sheet thickness is read out. The droplet size may be set by reading the size of the droplet corresponding to the second table from the second table.

It is a block diagram which shows the electric constitution of the personal computer and printer in embodiment of this invention. It is a screen figure which shows the property setting screen of the printer displayed on a display. It is a figure which shows the positional relationship of the paper and head which were installed on the platen, (a) is a conceptual diagram which shows the case where a paper is a plain paper and (b) is a paper as a glossy paper. It is a figure which shows the positional relationship of the paper and head which were installed on the platen, (a) is a case where a head is set to a low position, (b) is a case where a head is set to a high position FIG. It is a figure which shows the positional relationship of the paper and head which were installed on the platen, (a) is a conceptual diagram which shows the case where a paper is glossy paper and (b) is a paper. 6 is a droplet amount table for storing droplet sizes corresponding to paper types. It is a flowchart which shows the process in PC. It is a schematic diagram which shows a mode that an ink droplet is discharged to a recording paper from the head in a prior art.

Explanation of symbols

10 Personal computer 11 CPU
12 ROM
13 RAM
14 Hard disk 14b Drop volume table memory 14c Printer driver memory 20 Printer

Claims (10)

An ink discharge port that discharges ink and a droplet size control unit that controls a droplet size of ink discharged from the ink discharge port are provided, and printing is performed by discharging ink onto the recording medium from the ink discharge port. In an inkjet recording apparatus control program for controlling an inkjet recording apparatus,
A recording medium type setting step for setting the type of the recording medium;
A droplet size setting step for setting a droplet size of the ink controlled by the droplet size control means according to the type of the recording medium set by the recording medium type setting step. Inkjet recording apparatus control program.   2. The inkjet recording apparatus control according to claim 1, wherein the droplet size setting step controls a droplet size of ink to be ejected according to the thickness of the recording medium set by the recording medium type setting step. program.   The droplet size setting step is set so as not to select a small droplet size among a plurality of selectable droplet sizes according to the type of the recording medium set by the recording medium type setting step. The ink jet recording apparatus control program according to claim 1 or 2.   In the droplet size setting step, according to the type of the recording medium set in the recording medium type setting step, the droplet size is stored from the droplet size storage means in which the droplet size is stored corresponding to the type of the recording medium. 3. The ink jet recording apparatus control program according to claim 1, wherein the droplet size is set by reading The ink jet recording apparatus includes gap setting means for setting an interval between the ink discharge port and a platen disposed to face the ink discharge port.
The droplet size setting step includes an interval between the ink discharge port set by the gap setting unit and a platen disposed to face the ink discharge port, and a recording medium set by the recording medium type setting step. The ink jet recording apparatus control program according to claim 1, wherein the droplet size is set according to the type of the ink jet recording apparatus. An ink discharge port that discharges ink and a droplet size control unit that controls a droplet size of ink discharged from the ink discharge port are provided, and printing is performed by discharging ink onto the recording medium from the ink discharge port. In an inkjet recording apparatus,
Recording medium type setting means for setting the type of the recording medium;
A droplet size setting unit that sets a droplet size of the ink controlled by the droplet size control unit in accordance with the type of the recording medium set by the recording medium type setting unit. Inkjet recording device.   7. The ink jet recording apparatus according to claim 6, wherein the droplet size setting means controls a droplet size of ink to be ejected according to the thickness of the recording medium set by the recording medium type setting means.   The droplet size setting means is set so as not to select a small droplet size among a plurality of selectable droplet sizes according to the type of the recording medium set by the recording medium type setting means. 8. The ink jet recording apparatus according to claim 6, wherein the ink jet recording apparatus is characterized in that: A droplet size storage means for storing the droplet size corresponding to the type of the recording medium;
The droplet size setting means sets the droplet size by reading the droplet size from the droplet size storage means according to the type of the recording medium set by the recording medium type setting means. An ink jet recording apparatus according to claim 6 or 7. Gap setting means for setting an interval between the ink discharge port and a platen disposed to face the ink discharge port,
The droplet size setting means includes an interval between the ink discharge port set by the gap setting device and a platen disposed opposite to the ink discharge port, and a recording medium set by the recording medium type setting step. 10. The ink jet recording apparatus according to claim 6, wherein the droplet size is set according to the type of the ink jet recording apparatus.

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